Trench-cutter



J. PETERIVIANN.

TRI-:NCH CUTTER.

APPLICA'HON FILED JULY12I919.

Patented Nov. 11, 1919.

2 SHEETS-SHEET 2.

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ff JNVENTOR.

ATTORNEY.

UNITED STATES PATENT OFFCE.

JOSEPH PETERMANN, 0F PHILADLPHIA, PENNSYLVANIA.

Tannen-CUTTER.

Application led July 12, 1919.

To all 'whom t may concern:

Be it known that I, JOSEPH PETERMANN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have Vinvented new and useful Improvements in Trench- Cutters, of which the following is a specifie cation.

This invention relates to machines for cutting and breaking up earth, rock and other hard substances such as are usually encountered when excavating or cutting trenches, tunnels and the like in the ground for road making, sewer and conduit laying, or when boring for tunnels, shafts, and so forth.

The main object of this invention is to provide a machine for the purposes above referred to wherein the hammer, drill oi' other tool is so disposed that the full weight and pressure of the hammer, drill or other tool is always directly in line with the blow so that said tool gives the .fullest resistance to the work.

Another obj ect of this invention is to provide a trench cutter in which the engine, compressor and tool are combined and carried by a single truck whereby greater efficiency is attained and considerable manual labor saved.

A further object is to provide a trench cutter in which the tool is so mounted relative to the truck body that it may be operated in any direction without in any way detracting from its efficiency or impeding its proper operation.

With these and other objects in view, as will later be more apparent, my invention consists essentially in the novel features of construction, combination and arrangement of parts hereinafter fully described and more specifically pointed out by the appended claims.`

In the further disclosure of the invention, reference is to be had to the accompanying drawings, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which:

Figure 1-is a plan view of a trench cutr ter embodying my improvements.

Fig. 2-is a side elevation of the same.

Fig. 3-is an enlarged fragmentary side elevation of the cutting tool supporting mechanism, associated parts, and the rear end of the truck frame.

Speccation of Letters Patent.

Patented Nov. 11, 1919.

Serial No. 310,309.

Fig. ikis an end elevation of the same, andrlooking from the left hand of the preceding figure. y V

5-is a top plan view of 'the same.

Fig. 6-is an enlarged longitudinal section of the tool support proper.

Fig. 7`-is a section on the line 7-7 in the preceding figure and looking in the direction of the arrows.

Fig. S-is' a section on the line 8-8 in Fig. 6; and l Fig. 9- is a perspective view of a detail hereinafter more specifically referred to.

Referring to the drawings, the truck proper a includes opposed spaced side members 10, 10, preferably made of strong channel irons, which are braced together by cross beams 11, 11, similarly made of channel sections and securely bonded to the side members by angles 12, 12. This truck frame orl body a, has securely fixed to each side thereof by bolts 13, heavy V-shaped bearing members 14, which are cut away in vertical section to seat beneath the channels 10, 10, and in these bearing members 14, are fitted in any of the well known ways the axles 1'5, for the road wheels 16, 16 it being of course understood that a fifth wheel 17, is provided in connection with the front aXle 15, so that the truck can be properly handled when moved from place to place.

Mounted on an appropriate platform carried by the truck n are the compressor 18, and engine 19, which are of any of the standard types.

At or near the rear end of the truck a., and at each side thereof I mount opposed bearing members 20, 20, which are undercut or recessed at 2l, to fit snugly on the side members 10, and to which they are securely held by bolts 22. These bearing members 20, 20, constitute pedestals or supports for a transverse shaft 23, which seats in the ends there of at 24, and is prevented from rotation by set screws 25. Fitting snugly to the bearing members 20, 20, are vertically disposed channels 26, in the upper ends whereof are secured bearing bushes 27, held in place by set screws 2,8. Spaced from the aforesaid bearing members 20, 20, are corresponding members 29, 29, which constitute pedestals or supports for a transverse shaft 30, ywhich seats in the ends thereof at 3l, and` is prevented from rotation by set screws 32, bolts 33, holding the members 29, 29, inplace.

Slidably mounted on the shafts 23, 30, are

a pair'of heavy crankedmembers 34 which are kept in proper spaced relation byv angle ties 35, one flange whereof is embedded stud 41, and in the ends of saidtubular shaft I form opposed longitudinal cut-away portions 42, Fig. `T---in which snugly lit the v fantail projections 43 of internally threaded nuts or sleeves 44-Fig. 9. Collars 45, snugly fitthe ends of the shaft 39, and are held firmlyinplaceby set screws 46. Passing axially through the hollowJ shaft 39, and in rthreaded engagement with the aforesaid nuts 44,'is a transverse `screw shaft 47 the reduced ends 48, whereof are housed in the bearings 27 hereinbeifore" referred to, and keyed or otherwise attached on the outer ends are hand-wheels 49.v Thus it will be l. seen that by manipulating the hand-wheels 49, thespaced members 34, and hollow shaft 39, can be traversed from side to side of the machine. f

Fitting snugly on the shaft 39, are a pair of clamping jaws 50, fashionedat one side with semi-circular dovetail aws 51, in which snugly and revolubly lits the conical proj ection or nut 52, of the hammer or drill shell 53, which is supplied lwithcompressed air from the compressor 18, in any of the well Aknown ways. lClamping or locking means of any,l of the well known forms may be provided -for-holding the tool in any desired position. 1 f

'Fromi the foregoing description it-will be re`adil seen that by my invention I provide an e ective and reliable machine for the purposes specified in which the tool can be operated in any vertical orangular direc: tion-relative yto ,the longitr'idinal axis or transverselyY of the truck. Furthermore by connectingl the engine 19, through a chain drive 54, with a'sprocketwheel 55, on the rear axle 15, and fitting a steering mechanism 56, in connection with the fifthl wheel 17, the entire machine is rendered self propelled. l l. i

Still further it will be readily understood that by my invention Iv provide'a trenchcutter orV hammer which is self-propelled and inv which the Vhammer or cutting tool can be operated-at any angle while .still having the `full weight orpressure of the ham- Y linerte g'ive full resistancev .to the impact of saidv hammer.' Further the hammer or tool can be moved from side to side or up and kdown at any. 'angle without cutting-olf the motive power thereto wherebyv a great savlng of time 1s effected, and economyV in Y labor` ensuesl V,It will also be seenV that I have the full weight of the hammer, comers-er ses @assessed w resist. the. i111- pact of the blow or cut inasmuch as they are all closely related on the truck body while by' substituting a drop hammer the machine can be employed for crushing stone, concrete or similar hard or homogeneous substances.

Finally it will be readily acknowledged that by my present improvements, I provide an exceedingly effective and powerful ma- -chine for the purposes specified as well. as an easy and eflicient means for manipulating the same, and I wish it understood that while I have described one specific embodiment of my invention in detail, I do not` confine myself rigidly thereto, as it is obvious that slight changes may be made in the particular arrangement and combination of the several parts, without departing from the nature and essential features of my said invention. For instance, I do not restrict myself to the employment of channel irons, but consider myself at liberty to employ other appropriate sections to adapt my invention to particular working conditions.

IrIaving described my invention what I claim as new and desire to secure by Letters Patent is 1. In a machine of the type described, the combination with the truck body, engine and compressor, of spaced bearing members mounted on said truck body, shafts mounted in said bearing` members, spaced bearing members slidably mounted on said shafts and supporting a hollow shaft, a screw axially disposedin said holllow shaft and having threaded engagement with the ends thereof, clamping means carried by the hollow shaft and having a swivel head on which the tool is mounted, and means for rotating the screw to traverse the tool from side to side of the machine.

2. In a machine of the type described, the combination with the truck body, engine and compressor, of spaced bearing members mounted on each side of the truck body, transverse shafts mounted in said bearing members, cranked members slidably mounted on said shafts and supporting a hollow shaft, a screw axially disposed in said hollow shaft and having threaded engagement with the ends thereof, clamping means carried on the hollow shaft and having a swivel head for supporting the tool, and means for rotating the screw to traverse the tool from side to side of the machine.

3. In a machine ofthe type described, the combination with the truck body, engine. and compressor, of spaced bearing members mounted on each side of the truck body and having recessed parts to fit snugly on the side members thereof, transverse shafts rigidly mounted in the said bearing members` cranked members slidably mounted on said transverse shafts and 4eonmzcted inspaced relation, a hollow shaft rigidly secured in the elbow portions of the cranked members, a screw axially disposed in said hollow shaft and having tln-eaded engagement with winged sleeves secured in the ends thereof, clamping jaws carried by the hollow shaft and having a swivel head for supporting the tool, and means for rotating the screw to traverse the tool from side to side of the machine.

el. In a machine of the type described, the combination with the truck body, engine and compressor, of spaced bearing members having recessed parts to fit snugly on the side members of the truck body, transverse shafts rigidly mounted in said bearing members, cranked members, slidably mounted on the transverse shafts and connected in spaced relation by partially inset angle ties, a hollow shaft rigidly secured in the elbow portions of the cranked members, a screw aX- ially disposed in the hollow shaft and having threaded engagement with kwinged inserts Secured in and locked to the ends thereof and the end of said screw being freely revoluble in bearings extending upwardly from the opposed rear bearing members, clamping jaws carried by the hollow shaft and having a swivel head for supporting the tool, and means for rotating the screw to traverse the tool from side to side of the machine.l

5. A machine of the type described com.- prising in combination, a truck body having road wheels, an engine and compressor mounteddon the truck body, said engine being adapted to drive the compressor as well as propel the truck when desired, spaced bearing members mounted on the truck body, shafts mounted in said bearing members, cranked members slidably mounted on said shafts and supporting a hollow shaft, a screw axially disposed in said hollow shaft and having threaded engagement with the ends thereof, clamping` jaws carried by the hollow shaft and having a swivel head on which the tool is mounted, and means for rotating the screw to traverse the tool from side to side of the machine.

In testimony whereof I affix my signature.

JOSEPH PETERMANN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

